has specified data input has specified data output implements has format specification is published by is executed in CEL binary format Presence-Absence calls with Negative Probesets (PANP) gene expression analysis Gene expression dataset panp Nandini Badarinarayan http://bioconductor.org/packages/2.4/bioc/html/panp.html A function to make gene presence/absence calls based on distance from negative strand matching probesets (NSMP) which are derived from Affymetrix annotation. PANP is applied after gene expression values are created, and therefore can be used after any preprocessing method such as MAS5 or GCRMA, or PM-only methods like RMA. NSMP sets have been established for the HGU133A and HGU133-Plus-2.0 chipsets to date. Graph plot BioConductor Software R software CSV data set CEL ASCII format descriptive statistical calculation Bioconductor